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SOA '72 FJ40

Discussion in '40- & 55-Series Tech' started by rocrawler, Feb 18, 2003.

  1. rocrawler

    rocrawler

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    Here's a pic of my '72 FJ40 after I did a SOA.
     
  2. Design311

    Design311

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    Looks good! Are those stock springs or lift springs with your SOA? Wanna drive to Arkansas and do mine next ;)
     
  3. rocrawler

    rocrawler

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    Those are 2 1/2" lift springs. Sorry, but you'll have to take a number. Just started on a '70 FJ40 for a friend.
     
  4. rocrawler

    rocrawler

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    Another pic of the '70 FJ40 on index ramp.
     
  5. ScottFJ40

    ScottFJ40

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    Looks very good. How much did you rotate the knuckles?
     
  6. rocrawler

    rocrawler

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    I didn't rotate the knuckles at all. I mounted the perches parallel with the stock perches. So far I haven't had any problems with anything. It wheels great. :)
     
  7. woody

    woody Internet Fireman Staff Member

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    without doing a shackle reversal, and keeping the shackles in front as pic'd, the cut-turn is not a requirement, since the pinion rotates up during extension and decreases the bind problem found with SOA's and reversals.

    Nice lookin' project!
     
  8. rocrawler

    rocrawler

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    I've found out that the shackel reversal is way overated. If you keep your tierod ends in good shape and keep all the slop out of the steering there is no need for one. Of course the Scout PS doesn't hurt either.
     
  9. Medusa

    Medusa

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    George, maybe I am not seeing it correctly, but in the first picture, it looks like the rear shackle is inverted. What is up with that?
     
  10. Design311

    Design311

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    Rocrawler, what perches did you use? So you just paralleled the bottom perches front and rear? Can you use the mini truck power steering with a SOA conversion? I was under the impression that you HAD to cut and turn if you went spring over. I don't plan on doing SR anyway. This gives me hope on actually tackling this job myself since I can weld pretty decent. Thanks for any input.
     
  11. Design311

    Design311

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    Medusa, looks like a double shackle set up maybe?
     
  12. Medusa

    Medusa

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    Double shackle or not, it still looks inverted to me :eek:
     
  13. Design311

    Design311

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    True, I guess I didn't think about it long enough 8)
     
  14. rocrawler

    rocrawler

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    I used Mopar perches, got them from Summit for $12.95 a pair.
    It is a double shackle setup, and no it's not inverted, that's the way I set it up. It added about 4" more drop to the rear. Sorry I haven't seen the mini truck PS setup, as far as I'm concerned Scout is the way to go. I am using the mini truck front disk brakes though.
     
  15. Design311

    Design311

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  16. rocrawler

    rocrawler

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    Yes those are the ones. :D. The only one that's not a straight weld on is the one on the passenger side front. You have to grind one side of the perch down to fit over the diff.
     
  17. Medusa

    Medusa

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    I am curious why you set it up that way. Below is a blowup of the shackle region of your original photo:
    [​IMG]
    It is a little hard to see, but it looks like the double shackle is pinned to the frame in the front, has the hinge in the rear and the primary shackle is definitely inverted (pointed forward). This arrangement is backward from the normal installation of a double shackle as shown below:
    [​IMG]
    What advantage to you gain by setting up the double shackle backwards?
     
  18. PHAT MAX

    PHAT MAX

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    what did you use for a front drive shaft, mine binds right now, and thats with stock spings! i would appreciate it.
     
  19. GloNDark

    GloNDark

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    Hope you have a good roll cage! LOL

    After my spring over, and before the wide axles, if you looked at an obstacle funny my cruiser went belly up.
     
  20. rocrawler

    rocrawler

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